| A survey of surface mount device placement machine optimisation: Machine classification Recent countries visiting this post |  |
 | 15 | United States |
 | 3 | Taiwan |
 | 2 | Europe |
 | 1 |
| A survey of surface mount device placement machine optimisation: Machine classification Recent countries visiting this post | |
| 15 | United States |
| 3 | Taiwan |
| 2 | Europe |
| 1 |